PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21FC428Nut,self-Locking,hexagon

General Electric Company Dba Ge Aerospace · NSN 5310-00-035-5296 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-035-5296 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-035-5296. Primary manufacturer part number: 21FC428.
Features
  • Nut,self-Locking,hexagon — FSC 5310
  • Nut Height: 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
  • Nut Style: HEXAGON
  • Nominal Thread Size: 0.250 INCHES IN
  • Bearing Surface Type: CHAMFERED
  • Temp Rating: 550.0 FAHRENHEIT NOMINAL DEGF
  • Thread Class: 3B
  • Thread Direction: RIGHT-HAND
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-035-5296, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is General Electric Company Dba Ge Aerospace. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-035-5296
Primary Part Number21FC428
Item NameNut,self-Locking,hexagon
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerGeneral Electric Company Dba Ge Aerospace
StatusACTIVE
Nut Height0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN
Nut StyleHEXAGON
Nominal Thread Size0.250 INCHES IN
Bearing Surface TypeCHAMFERED
Temp Rating550.0 FAHRENHEIT NOMINAL DEGF
Thread Class3B
Thread DirectionRIGHT-HAND
MaterialSTEEL OVERALL
Thread Quantity Per Inch28
Locking FeaturePREVAILING TORQUE ALL METAL DESIGN
Thread SeriesUNF
Surface TreatmentCADMIUM OVERALL
Width Across Flats0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5310-01-012-359921FC428 INTERCHANGEABLE
Nut,self-Locking,hexagon
Sps Technologies, Llc Dba PB Fasteners
Cross-Reference Index
Part NumberManufacturer
21FC428 PRIMARY General Electric Company Dba Ge Aerospace (USA)
Related Parts
5310-01-012-3599INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
21FC428

Frequently Asked Questions

What is NSN 5310-00-035-5296?

NSN 5310-00-035-5296 is a Nut,self-Locking,hexagon, manufactured by General Electric Company Dba Ge Aerospace, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-035-5296?

NSN 5310-00-035-5296 has 1 cross-referenced part number: 21FC428 (General Electric Company Dba Ge Aerospace).

What NSN replaces 5310-00-035-5296?

There is 1 known substitute for 5310-00-035-5296: 5310-01-012-3599. Verify interchangeability with system specifications before substitution.

What are the specifications of 21FC428?

Key specifications for 21FC428: Nut Height: 0.270 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN; Nut Style: HEXAGON; Nominal Thread Size: 0.250 INCHES IN; Bearing Surface Type: CHAMFERED. 13 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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